The Lenovo ThinkBook 13x Gen 4 is a sleek and powerful 2.2-pound laptop that packs Intel Core Ultra 9 power and a vibrant 13.5-inch display with a 97% screen-to-body ratio. But what makes this system stand out is its support for Magic Bay accessories that attach magnetically via pogo pins. This includes a Magic Bay Studio 4K camera with dual speakers. And Lenovo lets us go hands on with a bunch of other prototypes, including a Magic Bay SSD, a mini fan, LED light bar, and even a second 10.1-inch display.